Before any Bluetooth connections are created in a pico net, all electronic devices should be in the standby mode. In this mode, each unit that has Bluetooth chip listens periodically for messages every 1. 28 seconds. Each time a device wakes up, it goes through the set of 32 hop frequencies defined for the unit.
The number of hop frequencies is different in many countries; however, 32 is the number used most frequently. The master device initiates the connection procedure. The master sends out a message at 16 hop frequencies and finds slave devices. If there is no response from a slave device, then the master device utilizes the remaining 16 frequencies. The maximum delay that can occur between the connection of master and slave is only 2. 56 seconds, while the average delay is only 0.
64 seconds. (web) This is very beneficial, because there is no need to deal with cables for a long time. Moreover, with the Bluetooth technology the connection between different devices that have Bluetooth chip is established almost instantly, which saves lots of time (it is vital for a quick and easy set-up of a functional interconnection between various electronic devices).
Forward Error Correction is aimed to limit the influence of random noise on long-distance radio links. Bluetooth radios operate in the unlicensed ISM band at 2. 4 GHz.
... each Bluetooth device that is appropriate for the ad hoc nature of a specified network. Bluetooth radio connections may require one-way, two-way authentication, or no authentication ... number used most frequently. The master device initiates the connection procedure. The master sends out a message at 16 hop frequencies and finds slave devices.If ...
Authentication is the key component of any Bluetooth system, allowing the user to develop a field of trust between personal Bluetooth devices, such as allowing only the owners notebook computer to communicate through the owners cellular telephone. Encryption is used to protect the privacy of the connection. The main goal of Bluetooth security system is to provide a required level of protection for its short-range use. Bluetooth becomes commonly used for digital cellular phones. The Bluetooth Specification contemplates interfaces where radio modules can be integrated directly into cellular handsets or can be attached with the help of add-on device. Bluetooth phone usage models include wireless hands-free operation using a Bluetooth headset and cable free networking with a Bluetooth notebook.
Digital mobile phones should support some subset of the Bluetooth Specification. Currently, Bluetooth is the best solution for wireless connection. If to compare it with other systems operating in the same frequency band, it will be possible to find that Bluetooth radio usually hops faster and uses shorter packets. This all makes Bluetooth radio more convenient and more advanced than other wireless connection systems. One of the main benefits Bluetooth technology has, is that it works independently of any specific operating system. In addition, short packages and very fast hopping limit the impact of other unwanted radio waves that can be caused by home or office equipment.
Bluetooth is the most talked about and fastest growing wireless technology developing today. Bluetooth is being use in various parts of life everyday. Although Bluetooth is growing fast it also has its flaws. I will be discussing the purpose, use, strength, and weakness of Bluetooth technology. The Bluetooth SIG is a privately held trade association and is not publicly traded. The Special Interest ...
In the future, Bluetooth technologies will become even more sophisticated. There is almost no doubt that quite soon Bluetooth will be used for many various purposes of connecting different electronic devices. Different ideas and projects can be developed and implemented with the help of Bluetooth technology. Moreover, worlds leading companies had made big investments into development of Bluetooth technology, which suggests that in the near future new products that make our lives convenient will be available on the market. These new products will be in demand, since Bluetooth technology can be used almost everywhere. Sources: web web web web.